13. Which of the following are definitely isotopes of each other (pick one)? 1. a chlorine atom with a mass of 36 2. a chlorine atom with 18 neutrons in the nucleus 3. an atom with 17 protons and 19 neutrons in the nucleus 4. a sulfur atom with a mass of 36
2.a chlorine atom with17protons and 18 neutrons in the nucleus 3.an chlorine atom with17 protons and 19 neutrons in the nucleus. In isotopes the number of protons remain the same,while the number of proton may vary. Option 2 and 3 can be isotopes.
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